Journalist Daniel Stashower talks with Todd about the inventor of the television, Philo T. Farnsworth, and how he lost the title. In his early teens, Farnsworth read science magazines voraciously and dreamed of becoming an inventor. His family had no radio or telephone, but in 1921, when he was fourteen, he imagined and sketched a drawing of a television camera tube. Stashower's book is "The Boy Genius and the Mogul: The Untold Story of Television".

Anthony Atala, from the Boston Children's Hospital, talks with Todd about the first "tissue-engineered" bladders. Atala transplanted the bladders into canines two years ago, and hopes to use them in humans soon.

Todd talks with Toby Lester, senior editor for "The Atlantic", about the birth and evolution of religions. Lester explains that new religions are continuously branching off from existing theologies. He talks about how the religous landscape looks now, and how it compares to that of a hundred years ago.